When your tires heat up from driving on a hot road the pressure inside of them increase. this is an example of which gas law

Le Châtelier's Principle

This principle states that as temperature increases the pressure must also increase to remain at equilibrium

i know insulin is primary but i dont know the others im sorry

explanation:

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !